US536263A - Ments - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

J BROOKS. PRINTING PRESS.

No. 536,263. Patented Mar. 26, 1895 wvbwe/weo newton wad. 0Wzh1wwy $5 tlt'bo'cnqvw 60 M r wwzw (No Model.) i 3 Sheets-Sheet 2.

J. BROOKS, PRINTING PRESS.

No. 536,263 Patent e d Marl 26,;1895.

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I t1 naw 71. MM m (No Model.) 3 Sheets-Sheet 3.

J. BROOKS. PRINTING PRESS.

Patented Mar. 26, 1895,

' wiweaoao 1n: NoRms PETERS co UNITED STATES PATENT OFFICE.

JOHN BROOKS, OF PLAINFIELD, NEW JERSEY, ASSIGNOR, BY MESN E ASSIGN- MENTS, TO THE POTTER PRINTING PRESS. COMPANY, OF SAME PLACE.

PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 536,263, dated March 26, 1895. 7 Application filed July 23,1891. Serial No. 400,405. (No model.)

To all whom it may concern:

Be it known that I, JOHN BROOKS, a citizen of the United States, residing in the city of Plainfield, county of Union, and State of New Jersey, have invented certain new and useful Improvements in Printing-Presses, fully set forth in the following description and represented in the accompanying drawings.

This invention relates generallyto cylinder printing presses and more particularly to that class of such presses wherein the cylinder or cylinders are moved from and into the plane of impression.

The improvements have for their object to provide means whereby the movements of the cylinder or cylinders to and from the plane of impression may be temporarily dispensed with or rendered inoperative for a purpose to be hereinafter set forth.

As a better understanding may be had by a detailed description of'a printing press embodying the improvements, such description will now be given, reference beinghad to the accompanying drawings, which illustrate a practical embodiment thereof.

.In said drawings :Figure 1, is a side elevation of so much of a printing press as is necessary to a proper understanding of the improvements. Fig, 2, is a diagram illustrating a modified form of the invention, and Fig. 2 is aplan view of the same. Fig. 3, is a side elevation partly in section of the trip or disconnecting mechanism; and Fig. 3 is a vertical section on the line 3 of Fig. 3. Fig. 4, is an end view of the same partly in section. Fig. 5, is a plan view of the same. Fig. 6 is a modification hereinafter referred to.

The improvements are illustrated in Fig. 1, wherein the usual framework A is provided with bearings for the impression cylinder B, a delivery cylinder or pulleys O and a main driving shaft D. The press is provided with the usual reciprocating form bed E traveling back and forth beneath the impression cylinder, its form being inked in the usual manner by ink rolls F. The sheets may be fed to the grippers of the impression cylinder from a feed board K, in any of the now Well known ways and either automatically or by hand. After being printed the sheets may be led ordelivev ered in any of the various ways common to printing presses which forming no part of the present invention is not herein shown.

The impression cylinder may be raised or lowered from andinto the plane of impression by any suitable mechanism, as for'instance by the reciprocation of a toothed rack 61 that meshes with a horizontal pinion 59, carryinga nut engaging with ascrew threaded" rod 57 that is arranged vertically in bearings 60 in the framework and seated upon spiral springs, not shown, with its upper end bearing against the under side of the box carrying the journal of the impression cylinder.

As these devices, which are duplicated upon the opposite side of the press, ar'e substantially like those set forth in Letters Patent No. 413,491, granted to me October 22, 1889,

'no specific description thereof need now be given. 7

As herein shown the impression cylinder receives its rotary motion from the driving shaft D, through a toothed Wheel on the shaft of the delivery cylinder. Thus the driving shaft carries a driving pinion t, which through a pair of intermediate toothed wheels 70, Z, transmits motion to the delivery cylinder wheel h, and thence to the toothed wheel m, on the impression cylinder shaft.

From the foregoing it will be seen that dur- 8o ing the vertical movements of the impression cylinder and its gear, the latter will be in constant driving connection with the driving pinion" so that no lost motion will occur in the gearing by which any defective register of the sheets fed to the impression cylinder may result. I

In cases where it is desirable to impart oscillatory motion to the impression cylinder the usual rack n, on the side of the form bed 0 E'may be in constant gear with a toothed wheel h on the delivery cylinder shaft as shown in Figs. 2 and 2 in which case the rack n escapes the teeth of the gear m but meshes with the gear h which is increased in 5 width to mesh with said gear m, with the same result as in the previous construction.

It is often desirable to be able to temporarily stop the vertical movements of theimpression cylinder or cylinders into and from I00 the plane of impression, as for instance in cases where the feeder may have been too late in the feed of the sheet to the impression cylinder, which in the operation of the press would cause the inked form to meet the naked surface of the impression cylinder requiring it to be cleaned before another sheet could be fed thereto; and also for instance where it is desired to back the press for any purpose. To this end there is provided means for shipping or disconnecting the devices by which the vertical movements of the impression cylinder are temporarily stopped, which means may obviously partake of various forms and may be operated in many ways according to the exigencies of the particular construction employed for effecting these vertical movements.

In the present construction, referring to Figs. 1 3 and 5, one of the rolls 69 bearing upon the actuating cam 66 is rendered movable with respect to its active position. The cam 66 is mounted on a cross shaft 51 of the machine, receiving suitable motion from the driving pinion 2', through intermediates 70, Z, pinion p, of the shaft of the intermediate 1, and toothed wheel q, fast on said cam shaft. The cam is borne upon, upon opposite sides, by said roll 69 and another roll 70, which are both carried by a rod 67 slotted to embrace the cam shaft with one end pivotally connected to a lever 62, said lever being secured to a sleeve 63, that rocks about a cross shaft extending between the side frames, or on a pair of studs extending therefrom. The opposite end of the sleeve is provided with a lever similar to the lever 62, the upper ends of which levers are each connected to a link .2: with the toothed rack 61 on each side of the machine.

Instead of connecting the roll 69 fixedly to the rod 67 as common, it is mounted on the end of a supplemental rod 30, the opposite end of which is pivotally connected to the rod (37, the roll end of the lever being normally seated upon a foot 31 projecting from therod (37 and thus prevented from moving downward;see Fig. 3 the supplemental rod and its roll being free to move away from the cam in the opposite direction. \Vith this construction it will be apparent that during the regular operation of the machine, the cam shaft and cam rotating in the direction of the arrow 1, Fig. 3,the parts will operate as before to rock the lever (32 back and forth, and through the rack or raise and lower the impression cylinder. Theforce of the cam 66 being downward against the roll 69, its supplemental rod will be thereby held firmly seated against the foot, so that the action of the cam will be the same as if the roll were carried directly by the rod 67.

Should the press be backed-up or run in the reverse direction, (the cam-shaft moving in the opposite direction from that indicated by the arrow) the cam in moving against the roll 69 will simply rock it upwardly on the pivot of the supplemental rod without imparting any movement to the rod 67 and lever 62,:

the supplemental rod and the roll returning to their normal positions on the passing of the high part of the cam. Thus, if it be considered in backing-up the press that as the high part of the cam passes the roll 70, the impression cylinder has been raised from the plane of impression, the cylinder will remain in its raised position because the cam passes the other roll idly, there being sufficient friction in the parts raising the cylinder or on account of the positive feed of the screw and nut to hold it raised until they are moved positively to allow it to lower. Hence there will be no danger of contact of the form with the impression surface. So far as this part of the invention is concerned, no other instrumentality is necessary to complete the structure; but in order to render it possible to temporarily stop the vertical movements of the cylinder while the press is operating in its usual manner a trip 34 is provided, which being under the control of the pressman and in the present construction coacting with the movable roll, may be brought into action at any time.

The trip in its more simple form as shown in Fig. 6 may be in the form of a bell crank leverone end of which is adapted to engage with the under side of the supplemental rod 30 and the other end with a foot or hand piece within reach of the pressman, who upon rocking the lever in the direction of the arrow will raise the supplemental rod and move the roll 69 away from the action of the cam, thereby temporarily suspending the action of the cam, and causing the cylinder to remain in one of its positions, in the present casein its raised position. In its preferred form, however, the the trip 3%, see Figs. 3 to 5, consists of an arm carried by a short rod 35 supported in bearings in the framework so that it may oscillate to rock thearm as well as to slide bodily therewith laterally. The free end of the triparm is adapted to engage with some part of the supplemental rod 30 as for instance the laterally projecting roll 30 when said arm is rocked to move the movable roll from the cam. So far as rocking the trip-arm is concerned, a foot or hand lever 37 (see dotted lines Fig. 3), or other suitable device may be connected to the rod 35 for this purpose, but it is preferred to elfect the movement of the trip-arm automatically as for instance by the cam 66 during its rotation, or it may be by another suitable cam. For this purpose the trip-arm carries a roll 38 normally out of the path of the cam 66, but which upon moving the trip-arm laterally is moved onto the cam so that its high part in passing the roll 38, rocks the arm and moves the movable roll 69 out of the cams action and continues to hold it outof action for a definite period. So long as the trip-arm is held in its inward position or with its roll 38 in the path of the cam, the

movable roll 69 will continue to be moved out of the action of said cam so that no vertical movement to the cylinder will occur, but as soona-s the roll 38 is allowed to return laterally to its normal position out of the path of the cam 66, the movable roll 69 will be allowed to return to its normal position to be acted upon by the cam in the usual way and the cylinder be subjected to the vertical movements as before. 7

To insure the proper lateral movement of the trip-arm to bring its'roll 38 into active position on the cam 66 and also to hold it in such position during the effective operation of the cam, there is provided a guide in the form of an idler 39 supported by a bracket projecting from the side frame in position to be struck by said trip-arm as it'is raised by the cam. The guiding idleris so positioned that should the lateral movement of the triparm be incomplete, that is to say should its roll 38 not be moved fully onto the cam, said idler, as the trip-arm rises, will force the latter to its full lateral position and so long as the cam is holding the trip-armraised the guiding idler will hold it in its lateral position preventing its roll prematurely leaving the cam before the completion of the effective movement of the cam.

The means for moving the trip-arm 34 laterally to place its roll into the path of the cam may obviously be of any suitable construction. Thus as shown a bell crank or T-shaped lever 40, see Fig. 4, is pivoted to -a bracket secured to the side frame, one end of which lever engages a grooved collar 41 on the end of the rod 35, the other end bearing a foot rod 2 within reach of the pressman, a springpressed rod 43.holding the parts in their normal positions.

Whenever the pressman desires to stop the vertical movements of the cylinder'he presses with his foot downward on the foot rod 42, thus rocking the lever 40 inwardly against the spring-pressed rod 43 and moving the rod 35 and trip-arm laterally so that the roll 38 is moved over the cam 66, its low part being then in position to permit the movement. In the regular forward movement of the cam 66 its high part moving against the roll 38 will gradually raise the trip-arm so that its free end will bear against the roll 36 of the supplemental rod 30 and continuing to rise will also raise said rod and thus carry the movable roll 69 out of the cams action so that during the remainder of its rotation no movement will be imparted to the lever 62 and toothed rack 61. In the rising movement of the'trip-arm it will bear against the guiding idler 39 which will confine the roll 38 in position on the cam and allow the pressman to remove his foot from the foot rod should he so desire. 1 As soon as the high part of the cam passes from the roll 38, the trip-arm lowers by gravity, permitting the supplemental rod and'roll 69 to also lower, the roll first meeting the cam and then finally reaching its normal position. In so doing no action of the cam upon the rod and lever 62 will occur because the roll '69 will not'have-reached its normal position until immediately after the high part of the cam has passed. It the pressman desires any further stoppage of the vertical movements of the cylinder he willeither have kept his foot pressing upon the foot rod 42 or will again press upon it as before, when the operations will be repeated. Should he wish the press to continue its regular operation, he will have removed his foot from the foot rod and upon the lowering movement of the triparm, said arm will also gradually move laterally to its normal position, removing its roll from the cam 66, guided by the guiding idler 39 and under the pressure of its spring-pressed rod 43. r

The improvements are .not necessarily limited to the precise constructions described as they are obviously susceptible of various modifications within the range of skilled mechanics.

What is claimed is 1. In a printing machine, the combination with a cylinder, of means for moving said cylinder to and from a coacting instrum'entality, said means including a shipping or disconnecting device which is rigid relative to said means in its normal forward movement, and yielding tangentially relative to said means in the backward movement thereof whereby the machine may be moved backward without disturbing the position of the cylinder, as set forth.

2. The combination with an impression cylinder, of means for moving it to and from a coacting instrumentality such as a form bed, said means including a cam and a movable cam-roll and said cam-roll being mounted rigid relative to the movement of the cam in its normal forward movement and movable tangentially out of operative relation with said cam on the reverse movement of the cam, whereby the motion of the cam may be reversed without disturbing the position of the impression cylinder, as set forth.

3. The combination with a cylinder and a coacting instrumentality such as the form bed, of a cam and connections for moving the cylinder to and from said instrumentality, said connections including a jointed part yielding automatically outwardly with respect to the axis of rotation of the cam, and a trip for positively moving said jointed part, substantially as described.

4. The combination with the impression cylinder and the form bed, of a cam and connections for moving the cylinder to and from the bed, said connections including a movable disconnecting cam-roll bearing on said cam, a seat holding the cam-roll against movement in one direction and a trip for moving the disconnecting cam-roll in the opposite direction out of active relation with the cam, substantially as described.

5. The combination with the impression cylinder and its form bed,'of a cam and connec-* tions for moving the cylinder to and from the bed, said connections including a jointed part,

a trip for operating said jointed part, and means for moving said trip into the path of said cam whereby the operation of the trip is automatic, substantially as described.

6. The combination of the cylinder and a coacting instru mentality, a cam and its operating connections for moving the cylinder to and from said instrumentality, a cam-roll included in said connections movable out of operative relation with the cam, a trip for said cam-roll and means for moving the trip into the path of said cam for automatically operating the trip, substantially as described.

'7. The combination of the cylinder and a coacting instrumentality, a cam and its operating connections for moving the cylinder to and from said instrumentality, a cam-roll included in said connections movable out of operative relation with the cam, a seat holding the camroll against movement in one direction, a trip for said cam-roll, and means for moving the trip into the path of said cam for automatically operating the trip, substantially as described.

8. The combination of the cylinder and a coacting instrumentality, a cam and its operating connections, for moving the cylinder to and from said instru mentality, a CIHIIIOH included in said connections, movable in one direction out of active relation with said cam, a seat holding the cam-roll against movement in the opposite direction, a trip for moving said cam-roll, and means for laterally moving the trip into the path of said cam whereby the cam-roll is moved out of its active position automatically, substantially as described.

9. The combination of the cylinder and a coacting instrumentality, a cam and its operating connections for moving the cylinder to and from said instrumentality, a cam-roll included in said connections movable out of active relation with said cam, a trip for moving the cam-roll, means for moving the trip into the path of said cam, and a guide as 39 for guiding the trip to and from its active position, substantially as described.

10. The combination with the impression cylinder and its bed, of means for raising and lowering the cylinder consisting of a cam, its cam-roll bar carrying a fixed roll, another roll also coacting with said cam fixed with relation to said bar only in the forward motion of the cam and automatically movable tangentially to the cam independent of said bar in the reverse motion of the cam, and connections between the bar and the cylinder, substantially as described.

11. The combination with the impression cylinder and its bed, of means for raising and lowering the cylinder consisting of the cam 66, the cam-roll bar 67 carrying a cam-roll fixed with respect thereto, a supplemental I bar pivoted to said cam-roll bar and carrying the other cam-roll, a foot projecting from said bar supporting the supplemental bar and its roll in a fixed position in one direction and allowing the supplemental bar and roll to move free in the opposite direction, and connections between the bar and the cylinder, substantially as described.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JOlIN BROOKS.

Witnesses:

N. MARLER, GEo. H. GRAHAM.

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